Abstract
We report the case of a young Emirati boy with HDR (Hypoparathyroidism, sensorineural Deafness, and Renal hypoplasia) syndrome due to the novel heterozygous deletion of two nucleotides (c.35_36delGC ) in exon 2 of the GATA3 gene. The patient developed hypocalcemia and hypomagnesemia at 3 weeks of age with high fractional excretion of magnesium, indicating renal magnesium loss. This is the first published report of hypomagnesemia in association with HDR syndrome.
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